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![LangChain](https://pica.zhimg.com/50/v2-56e8bbb52aa271012541c1fe1ceb11a2_r.gif)





Postgres聊天消息历史记录[#](#postgres-chat-message-history "此标题的永久链接")
==============================================================

本教程介绍如何使用Postgres存储聊天消息历史记录。

```python
from langchain.memory import PostgresChatMessageHistory

history = PostgresChatMessageHistory(connection_string="postgresql://postgres:mypassword@localhost/chat_history", session_id="foo")

history.add_user_message("hi!")

history.add_ai_message("whats up?")

```

```python
history.messages

```

